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Finding the Fourth Proportional to 92,469.72, 138,741.30 and 30,140.76

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Solution

The fourth proportional to 92,469.72, 138,741.30 and 30,140.76 is: 45,223.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,469.72 : 138,741.30 = 30,140.76 : x
  2. Step 2: Convert to fraction form
    92,469.72/138,741.30 = 30,140.76/x
  3. Step 3: Cross multiply
    92,469.72x = 138,741.30 × 30,140.76
  4. Step 4: Simplify right side
    92,469.72x = 4,181,768,225.39
  5. Step 5: Solve for x
    x = 4,181,768,225.39/92,469.72
  6. Step 6: Final answer
    x = 45,223.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.